云南省傣族、汉族人群乙型肝炎病毒感染与IL-6-572C/G和IFNAR1-168G/C的关联性研究

目的:探讨云南省西双版纳地区傣族和汉族人群IL-6-572C/G和I型干扰素受体1(interferon alpha receptor 1,IFNAR1)-168G/C位点单核苷酸多态性与乙型肝炎病毒(HBV)感染后疾病转归的关联性。方法:采集西双版纳州傣族、汉族人群血液样本共600份,其中每个民族包括健康对照组100名、HBV感染患者200名(含100名自限性恢复患者和100名慢性乙肝患者),运用限制性片段长度多态性聚合酶链反应(polymerase chain reaction-restriction fragment length polymorphism,PCR-RFLP)和DNA测序技术对IL-6-572C/G和IFNAR1-168G/C位点进行基因分型。结果:傣族人群中,-572C/G位点基因型多态性与HBV感染后转归的关联性并无统计学显著性。C、G等位基因型在HBV感染组、正常对照组之间和慢性乙肝组、自限恢复组之间差异无统计学显著性。但是在G显性模式(GG+CG/CC)下,GG+CG基因型为HBV感染者发展成为慢性乙型肝炎患者的保护因素(P0.05)。汉族人群中,-572C/G位点基因型和等位基因分布频率在各组比较中无统计学显著性,并且在G显性模式和G隐性模式比较中也无统计学显著性。在上述4种比较中,IFNAR1-168G/C位点在汉族和傣族样本中的差异均无统计学显著性。结论:IL-6-572C/G位点GG+CG基因型可能是傣族人群中HBV感染者发展成为慢性乙型肝炎的保护因素,而IFNAR1-168G/C多态性与HBV感染后转归在傣、汉两族中并无显著性关联。

Association between IL-6-572C/G as well as IFNAR1-168G/C and hepatitis B virus infection in populations of Dai and Han ethnicities in Yunnan Province

ATM: To explore the association between IL-6-572C/G (rs1800796) as well as interferon alpha receptor 1 (IFNAR1)-168G/C (rs2257167) and prognosis after hepatitis B virus (HBV) infection in populations of Dai and Han ethnicities in Yunnan Province. METHODS: The blood samples were collected from Dai people and Han people, each nation including 100 healthy controls and 200 infected individuals (100 spontaneous recovery individuals and 100 chronic patients). Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and DNA sequencing were used to identify the gene type. RESULTS: In Dai people, no significant difference was found between genetic polymorphism of -572C/G and prognosis after HBV infection. The differences of C and G alleles between spontaneous recovery group and chronic hepatitis B group, and healthy controls and HBV infection group were not statistically significant. Meanwhile, GG and CG genotypes were a vital protective factor for the person who developed into a chronic heptatitis B patient under the G allele dominance mode (GG+CG/CC) (P<0.05). In Han people, no statistically significance for IL-6-572C/G genotype and allele distribution in each group comparisons had been found, as well as the C allele recessive mode and C allele dominance mode. For the above 4 indicators, no statistically significant difference of IFNAR1-168C/G in Dai and Han people had been found.CONCLUSION: The GG+CG genotype of IL-6-572C/G may be a protective factor for the HBV-infected Dai people to develop into chronic hepatitis B patients. However, there is no significant association between the IFNAR1-168G/C polymorphism and prognosis after HBV infection in the 2 ethnicities.